APPROACH IMMIGRATION WELL BEFORE THE DATE,YO NEED TO SEE THE HEAD OF IMMIGRATION,ASK THERE AND THEY WILL DIRECT YOU,YOU WILL FIND MANY PEOPLE COMING FOR THE SAME PURPOSE.
SPEAK TO HIM GENTELY AND EXPLAIN WHY YOU NEED AN EXTENSION,YOU NEED TO SUBMIT UPON APPROVAL RECIEPT OF THE RETURN TICKET TO COUNTRY OF ORIGIN ONCE HE GRANT EXTENSION.